Internal combustion engine governor



Feb. 2, 1937. E, R. WILSON ET AL 2,069,466

v INTERNAL COMBUSTION ENGINE GOVERNOR Filed Dec. 5, 1955 Patented Feb. 21937 UNITED STATES PATENT OFFICE INTERNAL COMBUSTION ENGINE GOVERNORApplication December 5, 1935, Serial No. 53,044

1 Claim.

This invention relates to an automatic governor for the throttlevalve ofthe carburetor of an internal combustion engine and primarily astationary internal combustion engine.

It is particularly aimed to provide a novel construction which may bereadily applied to existing engines as well as be built into enginesinitially.

The invention resides in the combinations and details of the novel,fool-proof construction more specifically hereinafter described andshown in accompanying drawing.

In said drawing:

Figure 1 is a side elevation of an engine equipped with my improvement;

Figure 2 is a plan view of the parts of Figure 1;

Figure 3 is a vertical sectional view taken on the line 33 of Figure 2;

Figure 4 is a detail section taken on the line 44 of Figure 2.

Referring specifically to the drawing, wherein like reference charactersdesignate like or similar parts, Hi designates a conventional internalcombustion engine, for instance, of the stationary type, having amongother parts, a carburetor H, equipped with a throttle valve [2 mountedby a rotatable spindle l3, and also having a detachable cylinder head I4 secured in place by bolts l5.

In carrying out the invention, a bracket I6 is detachably connected tothe engine as by means of two of the bolts l5 as shown. Such bracket Ithas an upstanding portion I6 equipped with an inwardly turned lug IT, towhich a bearing member I8 is fastened. A Vertical post l9 having taperedends pivoting it in recesses in bracket l6 and the end of bearing memberI8 is pivoted to mount an L-shaped rod 20, the post l9 having a shoulder[9 to support a loop on the end of the rod 2|]. Rod 20 has a mainportion 2| and a lateral portion 22. The main portion 2| is riveted orotherwise fastened to a governor plate 23, while the portion 22 has ahorizontally directed end 22 that is connected by means of a link 26 toa rod 2'! pivoted at 28 to a crank 29 in turn rigidly connected to thespindle l3 of the throttle valve. The connection between link 26 and rod2'! is provided by passing an angular portion 21a of rod 2'! through anopening in an enlargement 26' on the link 26, and. then upsetting thefree end of the rod 21 as at 211).

The governor plate 23 has secured thereto an arm 3! which extendsrearwardly from the post I9. Such arm is preferably arcuate as shown,and has an eyelet 32 of a contractile coil spring 33 adjustablyconnected thereto by engagement with teeth 35 thereof. Said contractilespring 33, in turn, is connected to a plate 35, fastened as by means ofanother of the bolts I 5 to the cylinder head M or other suitable parts.5

The governor plate 23 is preferably slotted as at 37 to fit around themounting 33 for the shaft 33 which mounts and drives the fan 46, allforming part of the internal combustion engine l0, and designed inoperation to cool such engine.

In the operation of the engine, and starting from an idle position,wherein the throttle valve I2 is open and urged to open position throughthe contractile action of the spring 33, the starting of the motor I0 byoperating the fan 40 causes the 15 air from the latter to impinge thegovernor plate 23 to rock on the axis of the post l9, counter to thetension of the spring 33, thus moving the end 22 rearwardly andaccordingly actuating the rod 21 in the same direction, and accordinglyturning the crank 29 and closing the throttle valve partially or whollyin accordance with the speed of the engine. Such parts move towardnormal position under the urgency of the spring 33 in proportion to thediminution of the speed of the engine.

Various changes may be resorted to provided they fall within the spiritand scope of the invention.

We claim as our invention:-

In combination with an internal combustion engine, its throttle valve,the cooling fan and operating shaft for the latter; a governor plate forthe throttle valve, said governor plate being disposed between the frontof the engine and said fan and having a slot through which said shaftpasses, a bracket having a horizontal portion fastened to the engine,said bracket having an upwardly extending portion and an inwardlyextending lug, a rod fastened transversely across the governor plate, apost extending through one end of said rod, said post having a conicalend provided with a shoulder in contact with the rod, a set-screwcarried by the lug engaging the other end of the post, said rod having adownwardly extending portion, a connection from said portion to thethrottle, an arm extending inwardly from said rod above the horizontalportion of the bracket, and a contractive spring connected to the saidarm and to the engine urging the parts to a position corresponding tothe open position of the throttle valve.

EDWIN R. WILSON.

